Radiocarbon Dating of Lacustrine Strands in Arctic Alaska
Radiocarbon Dating of Lacustrine Strands in Arctic Alaska
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阿拉斯加北极地区湖岸的放射性碳测年
DOI：
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发表时间：
1968
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影响因子：
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通讯作者：
C. Carson
中科院分区：
文献类型：
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作者：
C. Carson
1958- 1964年Pt巴罗地区湖泊过程和盆地层序研究报告。在冰丰富的晚更新世Gubik组开发的湖泊被两到四个暴露和重新植被的波切货架，这表明由于气候和海平面的微小变化的海盗区域相关周期包围。当湖泊被苔原溪流覆盖并被排干时，在目前的气候条件下，需要10-20年的时间进行重新植被。从废弃的海滩上采集的样本的放射性碳年代显示，大多数都小于3500年。对冰后期湖进-湖退旋回进行了描述和图解。湖泊最大海侵可能发生在高温期末期（3500-4000 BP），高温期后冷却期的开始与排海初期同步。然而，在建立地貌表面和事件的明确时间相关性之前，需要进行更系统的调查。
Reports on 1958-64 studies of lacustrine processes and basin sequences in the Pt Barrow region. Lakes developed in the ice-rich late Pleistocene Gubik Formation are surrounded by two to four exposed and revegetated wave-cut shelves which suggest regional correlative cycles of piracy due to minor shifts in climate and eustatic level. Shelves exposed when lakes are intersected by tundra streams and drained, require 10-20 yr for revegetation in the present climate. Radiocarbon dates of samples from abandoned strands show the majority to be <3500 yr old. The postglacial transgressive-regressive lacustrine cycle is described and diagrammed. The lacustrine maximum transgression probably occured near the end of the hypsithermal (3500-4000 BP) and the onset of the post-hypsithermal cooling phase was synchronous with the initial period of draining. More systematic investigation is required however, before clear time correlation of geomorphic surfaces and events can be established.